SK Telecom cyberattack: Free SIM replacements for 25 million customers

SK Telecom cyberattack: Free SIM replacements for 25 million customers
Summary: SK Telecom has announced free SIM card replacements to its 25 million mobile customers following a USIM data breach, though only 6 million replacements will be available through May 2025. The breach, caused by malware, exposed customers’ USIM data but not personal identification or financial information. To mitigate risks, the company has enhanced its fraud detection measures and is advising customers to reserve replacements online due to limited inventory.

Affected: SK Telecom

Keypoints :

  • 6 million SIM card replacements available to customers impacted by the data breach.
  • USIM data exposed includes IMSI, MSISDN, and other sensitive information.
  • Enhanced fraud detection systems in place to prevent unauthorized SIM swapping.
  • Only customers who subscribed by April 18, 2025, are eligible for replacements.
  • Roaming services will be disabled for subscribers with SIM Protection activated.

Source: https://www.bleepingcomputer.com/news/security/sk-telecom-cyberattack-free-sim-replacements-for-25-million-customers/